| 摘要 |
A spinner (10) for making mineral fibers (36) by a rotary process includes a plurality of precious metal eyelets (28) mounted in the peripheral wall (18), preferably from 1,000 to 5,000 eyelets (28). Each eyelet (28) has an eyelet face (48) with multiple orifices (30) formed therethrough, preferably from 5 to 500 orifices (30). Preferably, the eyelets (28) are mounted in the peripheral wall (18) by brazing. The brazing metal (60) is nonreactive with the eyelet (28) and peripheral wall (18), and has a melting point below the melting points of the eyelet (28) and peripheral wall (18) and above the operating temperature of the spinner (10). The eyelet (28) is constructed so that the stress at the center of the eyelet face (48) is maintained below 34.5 MPa, preferably by constructing the eyelet face (48) with a diameter (D) to thickness (T) ratio of not greater than 30:1.
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